I feel like King did a better job of making the dialogue feel more "lived-in" in a sense---like it was more so a couple of neighborhoods on the walk even tho they'd never met each other---who were faced with a lot of the same diverse issues one might see in said neighborhoods.
I think the characters had much more natural conflict amongst themselves too which goes a long way to building a bond. And mah boi Swifty McV def had some more edge to him iirc.
The (almost) sense of community felt more earned by the end of the book...to the point where I wouldn't have even been mad at the movies ending fr if they had managed to do the same.
But, inherently, you can also get off more in (slow pacing) a book than you can a movie so it's not a big deal in the grand scheme of things I suppose.
It was still one of the better King adaptations for the most part.